MUSASHINOTSUKO

High-voltage power supply manufacturers
Semiconductor manufacturing equipment manufacturers
Ozone generator manufacturers
UV irradiation equipment manufacturers
X-ray analysis and inspection equipment manufacturers
Medical imaging and diagnostic equipment manufacturers
Particle accelerator and accelerator power supply manufacturers

High-voltage power units (laser power supplies, aerospace and research equipment)
Semiconductor manufacturing equipment (ion implantation, ionization, and acceleration systems)
Ozone generation systems
UV irradiation and electron beam equipment
Ultrapure water generation systems
Particle acceleration and plasma generation equipment

Having Trouble Developing High-Voltage Transformers or Power Units?

◆ Short transformer lifetime in high-voltage applications

◆ Insulation degradation caused by partial discharge

◆ Difficulty finding a supplier for custom high-voltage transformer design

◆ Long lead times for custom high-voltage power units

Musashino Tsuko Has the Expertise to Solve Your Challenges!

★ Our proprietary molding technology suppresses partial discharge to just a few pC, delivering highly reliable transformers and power units for high-voltage applications.

★ Advanced winding and insulation technologies minimize insulation failure and improve long-term reliability.

★ Rated up to 15 kV, our custom high-voltage power units can be tailored to your required voltage, power rating, frequency, size, and insulation specifications.

★ From design and prototyping to mass production, we provide one-stop custom solutions for high-voltage transformers and power units.

◎ Ideal for semiconductor manufacturing equipment, medical devices, ozone generators, UV systems, and other high-voltage applications.

Contact us today to discuss your application!

• Power Supply Manufacturers
• Server and Telecom Power Supply Manufacturers
• Semiconductor Equipment, Medical Device, and Industrial Robot Manufacturers

• LLC Resonant Converter Circuits
• High-Efficiency, High-Density DC-DC Converters
• Equipment Downsizing and Performance Enhancement
• Reduced Inductance Tolerance
• Minimized Leakage Inductance

Having Trouble Selecting Switching (Flyback) Transformers for LLC Resonant Power Supplies?

◆ Large variations in leakage inductance
◆ Large variations in magnetizing inductance
◆ Insufficient output under heavy-load conditions
◆ Long lead times for custom gapped transformers
◆ Inconsistent performance of gapped transformers

Musashino Tsuko Has the Expertise to Solve Your Challenges!

★ Our proprietary automatic ferrite core grinding system delivers highly accurate gap machining, ensuring tight inductance tolerances.

★ Proprietary winding technology precisely controls leakage inductance, magnetizing inductance, and switching frequency to meet your target specifications.

★ In-house gap processing eliminates external core machining, enabling rapid prototype delivery.

★ Extensive inventory of Litz wire, copper foil, and other winding materials allows quick response from prototyping to mass production.

◎ We design and manufacture custom transformers optimized for LLC resonant converters.

◎ Custom designs are available in a wide range of core sizes (EER9.5–PQ100), power ratings, and operating frequencies.

Please feel free to contact us for more information.

• Power supply manufacturers (Switching power supplies, UPS, etc.)
• Motor drive and inverter manufacturers (industrial machinery, EVs, elevators, etc.)
• HVAC and refrigeration equipment manufacturers (heat pumps, compressor control systems, etc.)
• Solar power generation and energy storage system manufacturers (PCS, power conditioners)
• Machine tool and industrial equipment manufacturers (servo and inverter-equipped machines)

• Harmonic current absorption and attenuation
 → Installed in the input stage of power circuits or inverters to suppress 3rd, 5th, and 7th order harmonics.
• Power factor correction and equipment protection
 → Improves compatibility with grid power, preventing malfunctions, errors, and unnecessary shutdowns.
• Noise suppression (EMI/RFI)
 → Reduces high-frequency noise and minimizes interference with surrounding equipment.
• Longer equipment life and stable operation
 → Minimizes heat and vibration, improving the overall reliability of reactors and systems.

Troubled by Harmonics in Your Power System?

◆ Equipment malfunctions and overheating caused by harmonic distortion
◆ Standard reactors cannot provide sufficient power factor correction
◆ Difficulty finding compact reactors for space-saving designs
◆ Need effective suppression of high-frequency noise

Musashino Tsuko Has the Expertise to Solve Your Challenges!

★ Optimized impedance design for superior harmonic attenuation
★ Proven high-frequency design technology for noise reduction
★ Low-loss coil design for improved reliability and thermal performance
★ Compact and low-profile custom designs to maximize installation space
★ High-quality production with reliable delivery and short lead times

◎ We design and manufacture custom reactors for harmonic suppression in power supplies, inverters, and motor drive systems.

Custom specifications for current, frequency, size, and other requirements are available.

Contact us to discuss your application!

Industrial Power Supply Manufacturer
Semiconductor Manufacturer
High-Voltage Medical Device Manufacturer
Water Treatment Engineering Provider

High Current and High Frequency Applications
・EV Charging and Fast Charging
・Semiconductor Manufacturing and Plasma Generation
・Electroplating and Ultrapure Water Production
・Lightning Surge Protection

Troubled with Selecting Transformers or Choke Coils for High-Frequency Applications?

◆ Excessive heat generation and power loss
◆ Low magnetic coupling, high leakage flux, and leakage inductance
◆ Difficulty selecting the optimal Litz wire configuration
◆ Insufficient DC bias characteristics

Musashino Tsuko Has the Expertise to Solve Your Challenges!

★ Skin-effect reduction for high-frequency operation
Optimized current distribution through advanced Litz wire design

★ Enhanced magnetic coupling
Significant improvement through our proprietary sandwich winding technology

★ Litz wire optimization
Recommendations based on extensive test data to achieve the best balance between efficiency and thermal performance

★ Magnetic material selection and precision gap processing
Ferrite, powder, amorphous, and other core materials selected for optimal high-frequency performance
Precise inductance control through our in-house core grinding technology

◎ We design and manufacture custom transformers and choke coils for high-frequency, high-current applications, including power conditioners and motor drive inverters.

Power supply manufacturers (switching, medical, and high-voltage power supplies)
Medical equipment manufacturers (X-ray generators, diagnostic and analytical systems)
Control panel and switchboard manufacturers
Industrial automation and factory equipment manufacturers
Test and measurement equipment manufacturers
Power, communication, and infrastructure equipment manufacturers

• Replacement for conventional EI transformers
→ Reduce size, weight, and installation space while improving packaging density.

• Compact control panels and power supplies
→ Low-profile designs for equipment with limited installation space.

• Medical and high-voltage power supplies
→ NCW Transformers compliant with IEC 60601-1 and IEC 61558-1 provide high safety and reliability.

• High-voltage applications
→ Ideal for medical X-ray generators and Cockcroft-Walton high-voltage power supplies.

• Custom transformer solutions
→ Designed to meet your requirements for voltage, power rating, insulation, dimensions, and other specifications.

Need a Smaller, More Efficient Transformer?

◆ EI transformers cannot meet size or height requirements.

◆ Limited installation space restricts equipment design.

◆ Medical safety compliant transformers are required.

◆ Need one supplier for design, compliance, and production.

Musashino Tsuko Has the Right Solution!

★ Replace conventional EI transformers with our NCW or OI Transformers for smaller, lighter, and lower-profile designs.

★ NCW Transformers comply with IEC 60601-1 and IEC 61558-1. They offer low leakage current, compact size, and proven performance in medical X-ray generators and Cockcroft-Walton high-voltage power supplies.

★ OI Transformers feature our proprietary low-profile design for 1-DIN enclosures. Excellent thermal performance and low leakage characteristics make them ideal for control panels, measuring instruments, and power equipment.

★ Custom design, prototyping, and mass production to meet your exact requirements.

Contact us today!